JJC LCD Hood

Received a JJC LCD hood screen protector for my Nex-5 today (which is the correct item) and it doesn't securily clip into place :?
I also have installed an original Sony PCK-LM1EA semi hard lcd protect sheet - do you think the thickness of the sony sheet interferes with the JJC hood?
Anyone ever experience this?

I swapped out the hard screen protector for a soft one, works perfectly now. I saw no reason to keep the hard one since the LCD hood's protection was good enough.
Also, a good tip is to duct tape the bottom of the hood and screen together. Mines kept falling off. :l